diff --git a/dokka-integration-tests/gradle/src/test/kotlin/KotlinMultiplatformIT.kt b/dokka-integration-tests/gradle/src/test/kotlin/KotlinMultiplatformIT.kt
index e1e54c0c79..b8c3334e13 100644
--- a/dokka-integration-tests/gradle/src/test/kotlin/KotlinMultiplatformIT.kt
+++ b/dokka-integration-tests/gradle/src/test/kotlin/KotlinMultiplatformIT.kt
@@ -46,22 +46,21 @@ class KotlinMultiplatformIT {
             val dokkaConfigurationJsons = project
                 .findFiles { it.name == "dokka-configuration.json" }
                 .joinToString("\n\n") {
-                    buildString {
-                        """
-                            ---
-                            ${it.invariantSeparatorsPathString}
-                            ${it.readText()}
-                            ---
-                        """.trimIndent()
-                    }.prependIndent()
+                    """
+                    ---
+                    ${it.invariantSeparatorsPathString}
+                    ${it.readText()}
+                    ---
+                    """.trimIndent()
                 }
 
             withClue(
                 """
-                expectedHtml: ${expectedHtml.toUri()}
-                actualHtmlDir: ${actualHtmlDir.toUri()}
-                dokkaConfigurationJsons: $dokkaConfigurationJsons
-                """.trimIndent()
+                |expectedHtml: ${expectedHtml.toUri()}
+                |actualHtmlDir: ${actualHtmlDir.toUri()}
+                |dokkaConfigurationJsons:
+                |$dokkaConfigurationJsons
+                """.trimMargin()
             ) {
                 val expectedFileTree = expectedHtml.toTreeString()
                 val actualFileTree = actualHtmlDir.toTreeString()